Wrench



May 8, 1923. 1,454,444

A. KOMNENUS WRENCH Filed Feb. '25, 1922 fl -I- I L "'lh Tim "'lmmilimlmwlmllllmllml ag? v INVENTOIR A TTORN Y ltday 8,

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ANG-ELOS KOB'INENUS, OF NEW YORK, N. Y., ASSIGNOROF ONE-HALF T0 ELIZAQDAY,

0F DEAL, DIE-"W JERSEY.

WRENCH.

Application filed February 23, 1922.

To all whom it may concern:

Be it known that I, Anonncs llonrnnnos, a subject of the King of Greece(who has declared his intention to become a citizen of the UnitedStates), residing at New York city. in the county or" New York and Stateof New York, have invented certain new and useful Improvements inrenches, o1 which the following is a specification.

My invention relates to improvements in.

wrenches and it is my object to provide the Robert wrench of U. S.Patent No. 1.407.578, dated February 21. 1922, with means where by itwill easily and quickly engage. a pipe or other object and which willfreely release it after the pipe has been screwed home.

It was found in practical use that the Robert wrench would not easilyengage a pipe. especially in confined spaces and that once engaged itcould not be released except by the application of great force and thatit let suddenly and violently and generally struhk and injured nearbyobjects. When used on the end of an extension it was almost impossibleto engage or release it.

I have overcome these di'diculties in the manner illustrated in theaccompanying drawing in which Fig. 1 is a side view of my improved formor the Robert wrench with the jaws closed; Fig. 2 a too View of thestructure of F 1; and Fig. 3 a side View with the jaws engaging a pipe.

The Robert wrench, as made and sold, comprises a handle 1 with anintegral jaw 2 and a co-operating jaw 3 connected to the jaw 2 by linksi.& and 5--5 secured to the jaws by pins 6, 6, 6. 6. These links arenonparalleh the pins on the jaw 3 being further apart than those on theaw 2. Neither are the links of equal length, the link 5 at the rearbeing longer than the link 4. A spring 7 connects the links and tends todraw the jaws together, their closing movement being limited by a stop 8on the jaw 2. I

When the wrench was to be engaged with a pipe or other object the jaw 3had to be laid against one side thereof and the jaws forced apart bypressure on the handle against the tension of the spring 7 which wasVery hard to do at arms length. When lel links Serial No. 538,663.

the wrench was to be removed a reverse pressure had to be applied to thehandle and at the same time it had to be pulled rearwardly but thetoothed jaws were held to the pipe by the spring pressure andconsiderable force had to be applied whereupon it slipped and let gosuddenly generally knocking a hole in the plaster or otherwi e injuringnearby objects.

I have overcome all these difliculties by providing the jaw 3 with arearwardly ex tending finger piece 9 which preferably terminates in ahook l0 lying close to the ban die 1. This enables a workman to placehis forefinger or thumb of the hand holding the wrench on the fingerpiece and by a slight rearward pull to open the jaws to any desiredextent to engage a pipe or other object. lVhcn the wrench is to beremoved a slight rearward pull on the finger piece opens the jaws andenables the wrench to be easily removed.

When the wrench is used on the end of an extension (a short piece ofpipe being generally used for this purpose) to enable otherwiseinaccessible places to be reached a piece of wire or string can befastened to the hook 10 and the jaws quickly and easily opened beemployed to give the same result but that shown has been found inpractice to be the best form for one hand operation of the wrench.

I claim 1. A pipe wrench comprising a handle and integral jaw, a co-operating jaw. non-parab of unequal len th connecting said jaws, aspring tending to pull the jaws together and a finger piece extendingrear-j wardly along the handle from the co-operating aw.

2. A pipe wrench as set forth in claim '1 in combination with ahook-like extension on the end of the finger piece.

In testimony whereof I have affixed my signature.

